Trump's Speech Patterns Have Deteriorated Over the Years. Why?

GUEST: Sharon Begley, Senior science writer for STAT, the life sciences publication of the Boston Globe, Previously she was the senior health & science correspondent at Reuters, the science editor and the science columnist at Newsweek, and a contributing writer at The Daily Beast. From 2002 to 2007, she was the science columnist at The Wall Street Journal, and previous to that the science editor at Newsweek. She is the co-author (with Richard J. Davidson) of the 2012 book The Emotional Life of Your Brain, the author of the 2007 book Train Your Mind, Change Your Brain, and the co-author (with Jeffrey Schwartz) of the 2002 book The Mind and the Brain.

BACKGROUND: President Donald Trump does not seem to be able to articulate himself very well as his unscripted speeches and off-the-cuff comments illustrate. But apparently this was not always the case.

STAT, the life sciences publication of the Boston Globe, just published a report questioning whether Trump is experiencing cognitive decline. The publication, "reviewed decades of Trump’s on-air interviews and compared them to Q&A sessions since his inauguration." According to the report's author, "The differences are striking and unmistakable."